Stereotype-plate-making machine



J. J. WAL SER I STEREOTYPE PLATE MAKING MACHINE Nov. 11 1924- Filed Sept. 5. 1920 7 Sheets-Sheet 1 INVENTOR Cg M7 B fix 1 I ATTORNEY Nam 11 1924. 1,514,744

J. J. WALSER STEREOTYPE PLATE MAKING MACHINE Filed Sept. 5 1920 7 Sheets-Sheet. 2

ATTOD Y 1,514,744 J. J. WALSER v STEREOTYPE PLATE MAKING MACHINE Filed Sept. 6, 1920 7 Sheets-Sheet 5 Nov. 11, 1924. 1,514,744

J. J. WALSER STEREOTYPE PLATE MAKING MACHINE vFiled Sept. 5, 1920 7 Sheets-Sheet 4 Illlllllll H'Hlllllllllllllllll 3 62 ,IQO

J. J. WALSER STEREOTYPE PLATE MAKING MACHINE Filed Sept. 3, 1920 7 sheets-sheet.5

ATTORNEY NQV. 9

1,514,744 J. J. WALSER STEREOTYPE PLATE MAKING MACHINE Filed Sept. 5, 1920 7 Sheets-Sheet e INVENTOR ATTORNEY Patented Nov. ll, 1924.

entries JOSEPH J. WALSER, OF ANN ARBOR, MIOIZEQAN, fisSfilIGl-IOR T0 GOSS PRINTING PRESS COMPANY, CCFRPOBATIGN Ola? ILLINOISQ i STER-EQTYPE-PLATE-TEihIiING IEAGHINE.

Application filed. September 3, 1920.

To all whom it may concern:

Be it known that I, JOSEPH J. il /arisen, a citizen of the United States, residing in Ann Arbor, in the county of 1V ashtenaw and State of Michigan, have made certain new and useful lmproven'ients in Stereotype-Plate-lviaking Machines, of which the following is a specification.

The invention relates to machines 1" O]"'l1'l2tl ing and operating upon stereotype plates, and in certain aspects thereof, the invention relates to a novel machine for casting such plates and finishing them ready to be put on a printing press.

Objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious herefrom. or ma be learned by practice with the invention; the same being realized and attained by means of instrun'ientalities and combinations pointed out in the appended claims.

The invention consists in the novel parts, constructions. arrangements. con'ibinations and improvements herein shown and de scribed.

The accoi'npanying drawings. referred to herein and constituting a part hereof, illustrate one embodiment eat the invention. and together with the description. serve to explain the principles of the invention.

01 the drawings Fig. 1 is a side elevation of a machine embodying the invention;

Fig. 2 is an end elevation. looking at 1 from the right. and showing the mechanism in casting position;

Fig. 3 is a vertical transverse section through the machine on line 33 of 1. looking in the direction of the arrows, showing the mechanism during the rotation of the casting core;

Fig. 4 is the same view as Fig. 3. but showing the mechanism holding the core stationar with the plate on top:

Fig. is a transverse section through the machine on an enlarged scale. on line 55 of Fig. 1. looking in the direction of the arrows, showing the plate clamped in position at the trimming station;

Fig. 6 is a fragmentary transverse section. on an enlarged scale. taken on line 6-43 of 1. looking inthe direction of the arrows;

Serial No. 407,884.

Fig. 7 is an end elevation, looking at 1 from the left;

tion on line 12-12 of Fig. 1'; showing the plate trimming devices;

Fig. 13 is a detached detail of the clamps engaging the straight edges of the plate at the finishing station;

Fig. 14 is a vertical section, on an on larged scale, taken on line 14.-1 1 of Fig. l. and showing the relation of the plate carrier to the delivery table; and

Fig. 15 is a perspective detail of the cutter tor shaving or finishing the concave ribs on the inside of the stereotype plate;

Fig. 16 is a fragmentary detail in end elevation of the plate lifting mechanism;

Fig. .17 is a. diagrammatic view of the electrical connections and controls for the machine;

Fig. 18 is a side elevation corresponding to Fig. 16 and looking thereat from the left:

and

Fig. 19 1s a transverse horizontal section on line 1919 of Fig. 18.

In the present exemplary embodiment the machine comprises certain mechanisms and instrnmentalities which will. be briefly described as a matter of convenience and clearness preliminarily to a particular and detailed description of the entire illustrative macl'iine although it willbe understood that the invention is not necessarily limited to the various features and devices as so ,describechnor to their complete and colleccore for casting the plate, and for subsequent clearance in removing the plate, inserting and removing the matrix, etc. The core after casting makes a half rotation to-bring the plate to delivery position. The plate is thus brought above the core, and is then lifted vertically clear of the core preparatory to its removal or conveyance automatically by the machine to the finishing mechanism. Devices are provided which operate automatically to hold the core with the plate above it while the plate is being lifted and then removed to the finishing mechanism.

The hot metal is poured into the casting chamber at one of the straight edges of the plate, and the mechanism is preferably designed to form a riser, or a portion of extra or waste metal, beyond each of the straight edges of the plate proper. The hot metal pump moves to and from pouring position through the automatic operation of the machine and the pump is preferably hand operated.

The completion of the metal pouring operation automatically starts into operation the movements of. the casting mechanism, already described, and sequentially thereafter the subsequent movements or operations of the finishing mechanism.

The cast plate after being lifted or freed from the core is conveyed to a finishing station, and there, while the plate is at rest, the two straight edges are trimmed, the risers or waste metal being cut off, and the interior arcuate ribs are trimmed or shaved. These operations on the plate are effected by a traveling carriage which moves past the stationary plate. This carriage has a pair of cutters which trim the straight edges and cut off the waste metal therefrom, and has also an arcuate cutter which passes within the curved plate and trims or shaves the arcuate ribs which have been cast on the inner side of the plate. The holding devices which hold the plate at the trimming station are formed to hold the plate so as not to inter fere with the operation of the various trimming devices as described.

The traveling carriage for the trimming devices, as described, also serves to take the trimmed plate with it on its backward or return trip and to deliver it at a delivery station from which the plate may be taken and put upon the press vcylinder.

In the embodied form, more in detail, the machine is provided with a power shaft, or shafts, upon which are various cams or other suitable actuating devices and connections therefrom, which operate the core rotating, plate lifting, plate conveying and trimming mechanism, together with the other devices referred to, the rotation or operation of the shaft being controlled by the comple tion of the pouring of the hot metal into the casting chamber, The pouring operation in this present embodiment is preferably manually operated or controlled, and as shown, the hot metal pump has a handle worked by an attendant, and after or upon the completion of the pump stroke, the power shaft turns over automatically and the various operations on the plate follow sequentially in the machine until the plate is finished and ready for delivery.

Referring now in detail to the embodiment illustrated byway of example in the accompanying drawings, the plate casting mechanism comprises a horizontally disposed casting core 1 provided with a shaft 2, suitably journaled in the machine frame, the core or cylinder 1 being rotatable. As embodied, the stereotype plate is cast against the underside of the core, the core thereafter being given a half rotation, whereby the plate is brought to the top of the core preparatory to conveyance or delivery therefrom to the subsequently operating mech anisms of the machine.

Cooperating with the core 1 is a concave casting member 8, slidable vertically toward the core 1, on the under side thereof, to form the casting chamber into which the hot metal is poured to cast the plate, and slidable away therefrom to afford clearance for the rotation of the core and the delivery of the cast plate. A. "lidable mounting for the concave member 3 comprises arms l and 5, working, respectively, in guideways 6 and 7 in the machine frame, there being pair of these guideways at either end of the concave member 3. Suitable matrix clamps and edge stops are provided, which may be of any suitable or adequate form, and have been omitted from the drawing for the sake of clearness.

The mechanism for vertically reciprocab ing the concave member 3 to and fro, comprises a pair of arms 8 and 9, likewise formed on the back of the member 8 and extending downwardly therefrom, said arms having mounted in their lower ends friction rollers 10 and 11, which rollers bear, respectively, on cams 12 and 13, which are fixed on a shaft 14.. In this embodiment the shaft 14: may be styled the main or power shaft of the machine, as it extends throughout the length of the machine and actuates most of the mechanisms which operate upon the plate. The rotation of the shaft 14, through the cams 12 and 13 moves the concave member 3 to casting position, holds it there while the plate is being cast, and thereafter retracts concave member 3, preparatory to the delivery of the plate.

Referring now to the embodied form of means for effecting and controlling the rotary movements of the casting core 1, that is for holding it at the casting position to make the cast, rotating it a half turn between the casting and plate delivery posimeans for conveying the plate between t ed to engage with the other straight edge of the cast plate, and having vertical movement to lift the plate away from the core 1, preparatory to its conveyance to the plate finishing station.

The lifter 66 is mounted in guideways 67 in the machine frame to have vertical reciprocation. In the embodied form of actuating means for the plate lifter, there is pivoted at 68 to the plate lifter 66 a rod 69, which rod at its other end 70 is pivoted to a lever 71, which lever is journaled on a shaft 72 mounted in the machine frame. Pivoted to the lever 71 at its other end 78 is tired 74, which rod is pivoted at 75 to a bent lever T6, which lever is journaled on a shaft 77 mounted in the machine frame. At its other end lever 76 is provided with a cam roller 78, this cam roller cooperating with a cam 7 9 fixed on the shaft 14. When the forward straight edge of the cast plate engages with the fixed stop 65, lifter 66 is behind or comes behind the other straight edge of the cast plate, and it is then moved upwardly by the mechanism just described and the plate is lifted from core 1 to position to be conveyed to the trimming station.

Referringnow to the embodied form of he position just described and the trimming station or mechanism, a pusher fixed upon one end of a long horizontally disposed bar 86 (Figs. 1, 2, 3, 4: and 5). The opposite ends of the pusher engage with and run along horizontally disposed guides 83 and 84:, mounted on the machine frame. The bar 86 is mounted in a guideway 87 located at the top of the frame of the trimming station (Figs. 1 and 5). Guideway 87 consists of two parallel side members 88 and 89 adapted to fit the shape of the reciprocating bar 86, which is that of an inverted T. The upper part of the bar 86 projects through the guideway between the members 88 and 89, and is provided with a toothed rack or straight gear 90. Meshing with the straight gear 90 is a gear wheel 91, fixed on a shaft 92, which shaft is journaled in a bearing 93, fixed on the machine frame. Fixed also on shaft 92 is a gear pinion 9 1, with which meshes a toothed rack or straight gear formed on reciprocating bar 95 (Figs. 1, 5 and 11). Bar 95 is held to pinion 9% by a guideway formed in a bracket 96 supported on shaft 92.

The embodied form of means for recipro cating rack bar 95 comprises a crank arm 98 to which the lower end of rack bar 95 is pivotally connected, the rack bar thus'reciproeating as the crank rotates. Crank arm 98 is fixed to a shaft 99 (bigs. 1, 5, 6 and 7 which shaft is journaled in bearings 100 and 101, supported on the machine frame. Fixed to shaft 99 is a beveled gear wheel 102, which meshes with a beveled gear wheel 103, fixed on' shaft 14; Thus, as crank arm 98 is rotated, rack bar 95 reciprocates to and fro, and through pinion 94: and gear wheel 91, reciprocates rod 86. Pusher 85 is thereby traveled to the right in Fig. 1, and thereafter the lifting mechanism lifts the plate 6: in front of it. On the reverse movement of the mechanism, the cast plate'is moved to the left by the pusher 85 toward and into the plate trimming mechanism. the end of the travel of the pusher positioning the plate for trimming within the trimming mecha nism. A support 104 is provided for carrying the plate during this travel.

At the trimming station the straight edges of the alate are trimmed. The plate is prererably cast with a riser, or a piece of waste metal. along each of the straight edges, hereby insuring sound metal throughout the extent of the plate itself. in the present embodiment, therefore, both of the straight e lges of the plate are broached or trimmed, and the interior concave ribs on the plate are shaved at a single operation.

Suitable devices are provided for firmly holding the plate during the trimming operation, and as embocied, clamps 118 and 114 are provided (F 5, 12 and 18), which are arranged in pairs at either end of and beneath the straight edges of the plate as it, rests in the trimming position, and are then swung upwardly to clamp the plate firmly in position against the arch of the trimming mechanism, as shown in Fig. 5. While the plate is thus held, the straight edges are cut, and the clamps 113 and 11 1 then swing downwardly to discharge the severed risers, the plate at the same time dropping to rest on the mechanism which removes it from the trimming to the delivery station.

Clamping arms 113 are fixed to a shaft 115 iournaled on the frame, and clamping arms 114 are fixed to a shaft 116, journaled on the machine frame. Shafts 115 and 116 are connected together by a geared sector 117 on shaft 115 meshing with a geared sector 118 on shaft 116. A connecting rod 119 is pivotally connected at its upper end to an arm 120 fixed to shaft. 115. At its opposite end, rod 119 has a yoke 121 which straddles shaft 14C. A cam roller is carried on rod 119, and cooperates with a cam 123. fixed on shaft 14 to rotate therewith. A spring 124 is in tension between the arm 120 and the machine frame to hold the cam roller 122 to cam 123. The manner of operation of this mechanism has already been described. I

Means are provided for preventing backward movement of the plate in the trimming mechanism, the embodied form thereof be} 1 ing adapted to cooperate with a semicircular shaving or planing knife which travels longitudinally and interiorly of the cast plate to shave or finish the arcuate ribs on the interior of the. plate. As embodied, an

arcuatestop 125 is adapted to swing down in the rear of the plate (1., while not projecting below the inside surface of the plate (Figs. 1 and 5). The step 125 is pivotally mounted at 126 on a bracket 127, which is supported on the machine frame. Fixed to the stop 125 is a lever 128, and pivotally connected to the lever at 129 is a rod 136. At its other end 131, this rod is pivotally connected to a lever 132, which lever is mounted on a shaft 1823, supported on the machine frame. At its opposite end lever 133 has a cam roll 134, which cooperates with a cam 135 fixed on the shaft 14. A

spring 136 in tension between'lever 122 and a support on the machine frame serves'to hold lever 132 toits cam 135. Guides 137 and 138 are provided for the stop 125. lhe stop 125 is in raised position as the plate advances and then moves downwardly behind the plate, holding it at the rear while the to the trimming devices so tl'iattliere will be no movement of the plate during the finishing and so that the cutting of the straight edges and the shaving of the rim will be true throughout the plate.

In the embodied form of said mechanism, an arm 146 is fixed on a shaft 147, jonrnaled in brackets 1. .8 and 149,which are supported on the frame of the trin'iming station. Piv otally mounted at 150 on arm 146 is a hook 151, this hook having a plate engaging surface 152. which en ages the plate a? interiorly thereof and atthe crown of its arc and presses 1t firmly against the frame of the trimmin station. On the o; )osite side if) i of its pivot point 150, the hook 151 has a tail 153, which is acted on by a suitable spring 154. it limiting pin is also mounted in the arm 1-16. Fixed "to shaft 14'? is an arm 158, and pivotally connected tothe end of arm 158 at 159 is a rod 160. Rod 160 at its lower end (Figs. and 6) is of yoked or annular form, as shown at 161, and is provided with cam rollers 162 and which cooperate with a cam 164, fixed on shaft 99.

As previously stated, and as will hereinafter be more fully described, the finishing mechanism enters the plate from the left hand end in Fig. 1, passes within and longitudinally of the plate a; to effect the finish ing,'and thereafter travels'in the opposite orreturn direction taking the finished plate with it to the delivery station. As embodied (Figs. 1, 9 and there is formed in the top and forward portion of the finishing mechanism a curved cam surface 165. The cam 164 isso timed that during the advancing movementof the trimming mechanism, the'plate supporting hook 151, which at this time is yieldingly pushed against stop pin 155 by spring 154, drops into the cam recess 165. As the trimming device advances, the hook 151 rides upthe left hand side (in Fig. 10) of thecurved cam surface 165 onto the straight cam or bearingsurface-166, the spring 154 yielding to permit this move ment.

In this position the hook 151 is in fixed relation relativelyto the cutter on the finishing mechanism, and as it directly engages the plate m, the plate is held firmly and in true position during the entire finishing operation, thereby effecting a uniform and true finish on the plate. This also prevents this endof the plate from dropping downwardly when the risers are cut off fromthe straight edge. After the finishing device has completed its stroke, cam 164 swings arms158 and 146 to the left in Fig. 10, and brings them to the position of Fig. 9 and clear of the plate.

Referring now in detail to the pl'atefinislr ing devices, such devices in the present 'embodiment reciprocate to and fro in a straight line, ontheforwardstroke cutting o'fithe risers from both the straight edges ofv the plateand at the same time shaving the arouate ribs'onthe interior of the plate by means of a sem'i cir'cular cutter. The finished plate is then dropped onto the back or top ofthe finishing device, which on its return reciprocatory movement conveys the plateto the delivery position.

As embodied, a'screw shaft 175 is rotatably journaled in bearings 176 and 177 in the machine frame so as to have rotation without longitudinal movement (Figs. 1, '7

and'12). Screw shaft 1? 5 is rotated first in one direction and then in the other to give reciprocatory longitudinal travel to the finishing device, which is threaded on the shaft. For this purpose there is fixed on the exterior end of screw shaft 17 5 a'pinion178. Pinion'178 meshes with an intermediate gear wheel 179. Gear wheel 179 mesheswith the gear wheel 180 fixed on a shaft 181. Fixed also on shaft 181 is a gear wheel 182, with which meshes a gear sector 183, journaled on shaft 184, which shaft is journaled in the machine frame. Pivotally connected to geared sector 183 at 185 is a connecting rod 186, which at'its opposite end 18 is pivoted to crank arm 188, which crank arm is fixed on shaft 14. Thus as shaft 14 rotates and crank arm 1S8'therewith, geared sector 183 1s osclllated first in one direction then in the other, and by the multiplying gears just described, screw shaft 176 is rotated first in one direction and then in the other to impart to the finishing mechanism the necessary longitudinal reciprocatory movement.

In the embodied form, the finishing device comprises a hub 200, screw threaded on shaft 17 5, a vertically disposed supporting plate 201 being fixed to or integral with hub 200. The plate 201 is also connected to the hub 200 by stifiening webs 202 and 203. Longitudinally disposed guides 198 and 199 are provided, along which the finishing device reciprocates in its travel. Supported on the front of plate 201 are two forwardly projecting broaching cutters 204 and 205, located and shaped to cut off the two straight edges of the plate which is held in position at the finishing station by the clamping arms 113 and 1114. The internal arcuate ribs on the cast plate are shaved by a semi-circular cutter 206, carried in fixed position upon the front of the plate 201, and fixed thereto by suitable means, such as bolts 207 passing through holes 208 in the cutter.' The edge 209 of the cutter is of approximately semicircular form, and it passes across the ribs on the inside of the plate during the longitudinal travel of the finishing device, thereby shaving the backs of the ribs to true form.

As previously stated, the finishing device serves also to convey the finished plate from the finishing station to the delivery station, and the plate carrying part or means of the finishing device comprises a curved saddle 210 projecting rearwardly from the plate 201 (Figs. 1, 10 and 14) and being of arcuate outer form so as to fit beneath the upper or crownportion of the plate edge. A supporting web 210 also extends backwardly from the hub 200 as a stiffener and support beneath the saddle 210. The cam grooves 165 and 166 referred to in connection with the description of the plate supporting hook 151 are formed in this saddle 210 (Figs. 10 and 13).

After the knives 204 and 205 have cut through the straight edges of the plate and the circular cutter 206 has shaved the backs of the ribs, the finishing-device comes to rest with the cutter 206 just to the right of the plate in Figs. 1 and 12. The saddle 210 is just beneath the plate and of substantially the same length. Clamping levers 113 and 114 swing downwardly, releasing the plate, and dropping the out off risers out of the machine, hook 151 swings clear of the plate to the position of Fig. 9, and the plate drops very slightly onto the saddle 210. Gear sector 183 changes its direction of rotation, as does also screw shaft 175, and the finishing device travels on its return movement, to the left in Fig. 1, to the position shown in that figure, carrying with it the finished plate.

As stated, the plate 02, now completely fin-, ished, is brought to the delivery position and left there upon a support to be removed by an attendant. The plate support comprises two curved members 211 and 212 (Figs. 1, 7 and 14). The plate supporting members 211 and 212 are recessed at their top forward end to receive the saddle 210, which slides in between them as best shown in Fig. 14. Air circulating recesses 213 may also be provided if desired. By the re turn movement of the saddle 210, the plate is slid upon the supports 211 and 212, and remains there on the next forward movement of the saddle.

In the embodied form the machine is driven from a single motor, and as already described, the various mechanisms are ac tuated from shaft 14 or from the shafts driven therefrom, although any suitable form of drive might be employed so far as concerns most features of the invention. The embodied form of drive for shaft 14 comprises a worm wheel 220, fixed on shaft 14. l/Vorm wheel 220 meshes with a worm 221, which worm is fixed on a shaft 222, journaled in bearings 223 and 224 on the machine frame. Fixed also on shaft 222 is a gear wheel 225, with which meshes a pinion 226, fixed on the shaft of motor 227.

In the embodied form, as stated, the machine is called into action by the operator actuating the pump handle 52 in making the cast. The embodied form of means for accomplishing this comprises or cooperates with devices for bringing the matrix holder to casting position preparatory to pumping the hot metal. In such embodiment, a switch lever 236 is pivotally mounted on the frame to constitute a'circuit terminal 238, and is moved by the pump handle 52 to momentarily close the circuit through terminal 239 (Fig. 2). Switch lever 236 at its opposite end is pivotally connected to a link 229, which link is also pivotally connected to the pump handle 52. The handle 52 is connected to the pump rod 5.4 by a pin and slot connection 231, which permits the handle 52 to operate switch 236 sufficiently in advance of the pumping operation to start the machine and to bring the matrix carrier 3 from its depressed or open position to the closed or casting position shown in 2 prior to the pouring of the metal into the casting chamber. A spring 232 in com pression between the pump handle 52 and a support 233 on the machine frame keeps the pin on pump lever 52 normally in the bottom of slot 231.

In the operation of the device, when the machine is ready for casting but while it is at rest, pump handle 52 is depressed, and thus swings switch lever 236, making the circuit between terminals 238 and 239. This energizes relay coil 258, the further connections for which will be later de scribed, tlicrehy starting the machii'r. i l hen the machine starts, the concave 3 is brought to casting position and thereafter, the pump handle continuing its downward stroke and the iin reachino the uner end of slot 231, the pump is actuated, to pour the hot metal into the castr g chamber. Teens are preferably provided "for guarding against the pump being actuated it there no matrix in ca ting posit on and to pre vent the pun'lping action heiiorc the con cave 3 is at casting position which will be described later. I

The machine is brought to rest; Fn the embodied form, by the conveyor returning to the trimn ing station without a i The means for cil'ecting this compr a switch operating lever 240 pivoted a Ztl on the conveyor 85, and the switch engaging end of lever'2 lO impelled into operative position by a spring 2422. Beneath the other end of the lever 240 is longitudinally slidahle pin 24-8, shaped at its bottom engage with the cast plate as the pic. lifted to delivery position Ir in the core 1. Pin 248 is supported oy, and i slidable in, hearings 245 and on the conveyor 85.

The switch with which the torego mochanisn'i cooperates comprises a lever mak ng and breaking the circ .it b. con terminals 2 1-8 and 2-1-9, the circuit conncc-- tions of which terminals will he leer dcscrihed. The switch is in' pelled to circuitclosing position by a spring 250.

It a plate is fed to the conveyor at the casting position, lever 2&0 will he oved to inoperative position. as shown in' {I l. by the sliding p n 24?, and switch will rcmain closed when conveyor 85 hringsplatc n; into the trin'nning station to he trir mod. it. on the other hand no plate is taken by, conveyor 8:. at the casting station, spring 242 will rot-l: lever 240 into the opposite position from that shown in l. and the lever will open switch 241-7 when conveyor reaches the finishing station. The clectri cal connections and mechanism in Figs. 1 and 2 are shown in somewhat diagrammatic form for the sake of clearness.

The electrical circuits, connections and controls for the machine may he of any suitable or standard form, so far as concerns many features oi? the invention. In Fi 17 is diagrainn'iatically shown one :t'ori'n 0t electrical controlling and operating mechanism, the relation of the tern'iinals 238, 28$) and 248 and 24.9 and OfBWitQlES 236 and 247 being shown therein. Said mechanism comprises a relay device and a self starter 5354, the power lines be ing' indicated by and l i hen relay is closed, it connects the curr nt through the self starter which in to; 1 0:, con

'concurrently or in t trolling the motor circuit in the usual manner, starts the motor 227 thereby starting the machii When relay crevice p53 is opened, the .notor 227 stopped, therclzy stopping the. machine the current supply to the self starter heingcontrolled by switch of the relay.

In operation. when switch is closed by the pump handle relay switch 2:? closed by the current through coil oi the relay device 2433 and the motor is started by the starter. The switch 286 closes but n'ion'ientarily but when it opens. switch 25'? ot the. relay does not opeinbut is held closed through there n'ce orholding coil 260 of the relay pro switch is closed (which is the case or conveyor 8:) reache' the tri without a plate). Coil 260 rill through enough current to close relay switch 25'3" but who the switch already closed, the coil will hold it in closed position. Ti "hen the casting has stopped conveyor 85 will reach the trimming station without a plate, switch 247 will he therehy opened, and coil 260 will release switch starter 25 2 will out of? the i'notor circuit and the motor w thereby stopping the machine.

Thus, whenever the pump handle is actuated, the motor will star-t startin the machine and it will run so long as plate is cast ever time the machine comes into position tor la' hen the desired or required number 0" plates has been cast and deliver the last plate cast. oy reason of the lever 2-" it will then stop 2410 opening switch on the first idle reciprocation oi? the coir 85, as alreadyd scribed. as the mad shown in ,h 'p: parts are noteriactl timed, but are in what is believed to h ,e the eares nsitions for readi. the drz "enibodied the operationsoit deli ticular plate from th; in:

' lining station is tiit into the t1 footed on one revoii'tion o'li' v rchine and the last previously c is then. conveyed to t 1 position. The particulz-tr i iierrcd to is trimmed and stored revolution of the machine. lent of complete plate is produced on each revolution of the machine.

The machine is so timed that it will stop first reon the next so thatthc casting chamher will be in opeh position to permit cha of matrices; and so that the last plate sent through will he finished and delivered or stored. Thus when the 200 which is equipped with the tlunming' devices and the plate delivering saddle 210, is in the position of f therewith tion.

Lin

Fig. 1, the plate conveyor 85 is at the left hand end of its travel in Fig. 1, (shown in dotted line) and the casting chamber is open.

In Fig. 17, hand-operated switches are shown for manual control of the machine. When the Run button is pushed to the in position, the machine will operate as described. When the Safe button is in, the machine will not run at all until the Run button is again pressed. When the Stop button is pressed, the machine will stop at once without'going to the end of its cycle. Bymeans of the Inc-h button,

the machine can be turned over slowly, by

degrees, or 'inched along for any purpose. The connections and operation of the foregoing will be clear from an inspection of Fig. 17 without further detailed descrip- The embodied form of safety device for preventing the untimely pumping of the hot metal already referred to, comprises a hook 270, pivoted on the machine frame at 271,

the tail 272 of the hook being in position to be tripped by the concave or matrix car-' nor 3 coming to casting position, and is normally supported 1n the position by a lug 277 on the machine frame. Pivotally supported at 273 on the pump handle 52 is a actuated. The pivot point of lever 270 isv 'positioned so that the thrust of lug 276 is radial when hook 270 is in engaging position, so that the lug. 276 will not rock the hook out of engaging position.

Means are preferably provided in cooperation with the foregoing to prevent the starting of the machine when there is no matrix in the concave 3. As embodied, the matrix holder 278 is slid in guideways 279 and 280 in the concave 3, and when the matrix is in casting position with respect to its carrier 3, the holder 278 closes a switch 281, which is in series with switch 236 and is automatically opened by a spring 283whenever the matrix holder is withdrawn from, or is not in proper position within, the matrix carrier 3. The matrix holder 278 is provided with a projection 282 which closes or bridgesthe terminals of switch 281 when the matrix holder 278 is in proper casting position.

It will be seen that the pump handlecannot be actuated farther than to close switch 236 until the concave 3 is in casting position, and to bring the concave to casting position, requires that the machine be started. The machine cannot be started until switch 281 is closed and this switch is closed only when a matrix .is in proper place within the carrier or concave 3. When the matrix is so placed and switch 281 is consequently closed, the closing of switch 236 .by the pump handle 52 starts the machine. This brings the concave 3 to castingposition, thereby rocking hook 270 out of the path of lug 276, and the hot metal can be pumped into the casting chamber.

In Figs. 16, 18 and 19, are shown details of the plate lifter which is shown in a general way in. Fig. 1. The plate lifter 66, it will be recalled, reciprocates in the vertically disposed guideways 67. The lifter comrises the nlate en a in member 290. a

1 b b b carrier 291 therefor reciprocating in the guideways 67, the plate engaging member being movable on its carrier, first to permit the cast plate 1 to pass it, and then to get on the under side of the straight edge of the plate a; to lift it ready for delivery. The lifter 66 also comprises means or devices for effecting the described relative movements between the lifter and its carrier.

r'is embodied, the carrier-for the plate lifter proper 290 comprises a slide 291, mounted to reciprocate in the two vertically disposed guides 67, which guides are mounted, as stated, on the machine frame. This slide is shown as having two side arms 292 and 293, which slide in the guideways 67, and a cross connecting piece 294:, at the bottom end. This cross-piece is provided with lugs 295 and 296, to which the actuating rod 69 is pivotally connected at 68.

The plate lifter 290 is pivotally mounted at its lower end in the slide by means of a pin 297 (Figs. 16, 18 and 19).. The lifter proper 290, near the upper end of the side members of the slide. has at each side bearing lugs 298 and 299, which keep it in position within the slide. Mounted on the lifter 290, near the bottom end is a lug 300, internally apertured to receive a pin 301, which pin is pivotally mounted in a lug 302, fixed to the cross-piece 294: of the slide. Coiled about pin 301 is spring 303, in compression between the two lugs 300 and 302.'and impelling the plate lifter 290 inwardly or to the right in Fig. 16.

Means are provided for holding the plate lifter 290 out, or to the left in Fig. 16, while the cylinder 1 with the cast plate as is rotating from casting position to plate delivering position. As embodied, a rod 306 projects from the side of the plate lifter 290, and it is provided with a cam roller 307.

Pivotally mounted on the'machine frame is a. switch cam 308, the cam being xed on a shaft 309, journaled in the machine frame at 310. A spring 311 is coiled about shaft 309, with one end thereoitiixed to the machine frame and the other end thereof tired to a collar 312,, fixed on shaft 309. The spring impels the switch cam into the position shown in -full lines in Fig. 16.

In the operation, of the device, as the plate lifter 290 moves downwardly from the,

full line position of Fig. 10 (after the plate a: has been conveyed away from the core 1), it moves downu 'ardly to the dotted line position in Fig. 16. During this downward movement of the plate litter 290, the-roller 307 will run on the outside of the switch cam 308, the plate lifter 290 being thereby rocked away from the cylinder 1.

At the end of the downward movement of the plate litter 290, the roller- 307 will come below the switch c am 308, as indicated in dotted line position in Fig. 16. In the meantime the newly cast plate a; has been rotated with cylinder 1 from casting position on the under side of the cylinder 1 to the plate deliveij'y position on the top side of the cylinder. During such movement of the plate :22, due to roller 307 rolling on the outside of cam 308, the plate lifter 290 is in the retracted position. On the succeeding upward moven'ient ot' the plate litter 290, the roller 307 is below the switch cam 308, as indicated in dotted lines in Fig. 16, From this position roller 307 passes inside or beneath the switch cam 308, and the plate lifter 290 will come up beneath the straight edge of the plate m, as shownin Fig. 16, and the plate will be lifted into position to be removed by the conveyor 85. I

It will be understood that departures may be made from the details of invention as herein embodied and described, within the scope of the appended claims, without departing from the principles of the invention and Without sacrificing its chief advantages,

Vhat I claim is 1. A. machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for supplying hot metal to the casting core and casting member, means printing plates including in combination a casting core, a cooperating concave casting casting core, a cooperating concave casting member, means for supplying hot metal to said casting members, and means called into action by the operation of the hot metal supplying means for calling the casting mechanism into action.

5. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, a pump operated at the option, of an attendant for supplying hot metal to said casting members, and means for lifting the cast plate from the core.

6. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for supplying hot metal to said casting members, and means called into action by the operation of the hot metal supplying means for lifting the cast plate. from the core.

7. A machine for operating on stereotype printing plates'including in combination a casting core, a cooperating concave casting member, means for supplying hot metal a) the casting core and casting member, means called into action by the operation of the hot metal supplying means for calling the casting mechanism into action, means for rotating the core, and means for thereafter lifting the cast plate from the core.

8. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting I member, means for supplying hot metal to the casting core and casting member, means called into action by the operation of the hotmetal supplying means for calling the casting mechanism into action, means for ro-- tating the core, and automatically operating means for thereafter lifting the cast plate.

from the core.

9. A machine for operating on stereotype printing plates including in combination a casting core, a. cooperating concave casting member, a pump operated at the option of an attendant for supplying hot metal to said casting members, means for rotating the core, and means for thereafter removing the cast plate from the core.

10. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for supplying hot metal to said casting members, means for rotating the core, and means called into action by the operation of the hot metal supplying means for thereafter removing the-cast plate from the core.

11. A machine-for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for supplying hot metal to the casting core and casting member, means called into action by the. operation of the hot metal supplying means for calling the casting mechanism into action, a pump operated at the option of an attendant for supplying hot metal to said casting members, means for rotating the core, and means for thereafter lifting the cast plate from the core.

12. A machine for operating on stereotype printing plates including in con'lbination a casting core, a cooperating concave casting member, means for supplying hot metal to said casting members, means for rotating the core, and means called into action by the operation of the hot metal supplying means for thereafter lifting the cast plate from the core.

13. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concavecasting member, means for supplying hot metal to said casting members, and means called into action by the operation of the hot metal supply means for lifting the cast plate from the core, said lifting means including a plateengaging device cooperating With the rotatmg core.

14. A machine for operating on stereotype r printing plates including in combination a horizontally disposed casting core, a cooperating concave casting member beneath the core, means for supplying hot metal to the casting chamber, means for imparting ahalf rotation to the core, and means called into action by the operation of the hot metal supplying means for thereafter lifting the cast plate from the core.

15. A machine for operating on stereotype printing plates including in combination a horizontally disposed casting core, a cooperating concave casting member beneath the core, means for supplying hot metal to the casting chamber, means for imparting a half rotation to the core, and means called into action by the operation of the hot metal supplying means for thereafter lifting the castplate from the core, said lifting means including a device cooperating with the rotating core.

16. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for rotating the core, means for lifting the cast plate from the core, manually operated hot metal pump, and means operated thereby for calling the core rotating and plate lifting means into action.

17. A machine for operating on stereotype printing plates including in combination a casting core, a cooperatin concave casting member, and means for lifting the cast plate from the core, a manually operated hot metal pump, and means operated thereby for calling the lifting means into action.

18. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for supplying hot metal to said casting members, and means for lifting the cast plate from the core, a manually operated hot metal pump, and means operated thereby for calling the lifting means into action.

19. A machine for ope ating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for rotating the core, and means for thereafter lifting the cast plate from the core, said lifting means including a plate-engaging device cooperating With the rotating core, a manually operated hot metal pump, and means operated thereby for calling the lifting'means into action.

20. A machine foroperating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for rotating the core, a manually operated hot metal pump, and means operated thereby for calling the core rotating means into action.

21. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, manually operated means for supplying hot metal to said casting members, and means called into action by the operation of the hot metal supplying means for removing the cast plate from the core.

22. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for supplying hot metal to said casting members, means for rotating the "core, and means called into action by the operation of the hot metal supplying means for thereafter removing the cast plate from the core, and means for holding the cor stationary While the plate is being removed therefrom.

23. A machine for operating on stereotype printing plates including in combination a casting core, a vcooperating concave casting member, and means for lifting the cast plate from the core, a manually operated hot metal pump, means operated thereby for calling the lifting means into action, and means for holding the core stationary While the plate is being lifted therefrom.

9A. A machine for operating onstereotype printing plates including in combinat1on acastmg core, a cooperating concave casting member, means for rotating the core, means for thereafter lifting the cast plate from the core, a manually operated hot metal pump, and means operated. thereby for calling the core rotating and plate lifting means into action, and means for holding the core stationary While the plate is being lifted therefrom.

means into action, and means for holding the core stationary while the plate is being lifted therefrom.

A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for rotating the core, and means for thereafter lifting the cast plate from the core, said lifting means ineluding a plate-engaging device cooperating with the rotating core, a manually operated hot metal pump means operated thereby for calling the lifting means into action, and means for holding the core stationary While the plate is being lifted therefrom.

27. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for rotating the core, a manually operated hot metal pump, means operated thereby for calling the core rotating means into action, and means for holding the core stationary While the plate is being lifted therefrom.

28. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, manually operated means for supplying hot metal tosaid casting member, and means called into action by the operation of thehotmetal supplying means for removing the cast plate from the core, and means for holding the core stationary while the plate is being lifted therefrom.

29. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for supplying hot metal to the casting chamber, means for rotating the core, a power shaft operating the core rotating means, said shaft being started into rotation by the operation of the hot metal supplying means.

30. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, manually operated means for supplying hot metal to the casting chamber, means for rotating the core, a power shaft operating the core rotating means, said shaft being started into rotation by the operation of the hot metal supplying means.

31. A machine for operating on stereotype printing plates including in combina tion a casting core, a cooperating concave casting member, means for supplying hot metal to the casting chamber, means for rotating the core, means for lifting the plate from the core, a power shaft operating the core rotating means and plate lifting means,

said shaft being started into rotation by the operation of the hot metal supplying means.

32. A machine for operating on stereotype printing plates including in' combina tion a casting core, a cooperating concave casting member, manually operated means for supplying hot metal to the castingchamber, means for rotating the core, means for lifting the plate from the core, a power shaft operating the core rotating means and plate lifting means, said shaft being started into rotation by the operation of the hot metal supplying means.

33. A machine for operatingon stereotype printing plates including in combination a casting core, a cooperating concave casting member, means for supplying hot metal to the casting chamber, means for lifting the plate from the core, a power shaft operating the plate lifting means, said shaftbei-ng started into rotation by the operation of the hot metal supplying means.

34. A machine for operating on stereotype printing plates including in combination a casting core, a cooperating concave casting member, manually operated means for supplying hot metal to the casting chamber, means for lifting the plate from the core, a power shaft operating the plate lifting means, said shaft being started into rotation by the operation of the hot metall supplying, means.

35. A machine for operating on stereotype printing plates including in combination.

a casting core, a cooperating concave casting. member, means for supplying hot metal to the casting chamber, means for rotating the core, means for lifting the plate from the core, means for holding the core at rest while the plate is being lifted therefrom, a. power shaft operating the core rotating means, core holding means, and plate lifting means, said shaft being started into rotation by the operation of the hot metal supplying means. 7

36. A machine for operating on stereotype printing plates including in combination means for casting a plate with a riser on a straight edge thereof, means for holding the plate stationary and a traveling cutter for cutting off the riser.

37. A machine for operating on stereotype printing plates including in combination means for casting a plate with risers on each straight edge thereof,means for holding the plate stationary, and a pair of traveling cutters for cutting off the risers.

38. A machine for operating upon stereotype printing plates including in combination means for supporting a semi-cylindrical plate, means for casting a plate, means for automatically delivering the cast plate to said support, a cutter for the straight edge of the plate, an arcuate cutter for the interior of the plate, and means for effecting relative movement between the cutters and the plate.

39. A machine for operating upon stereotype printing plates including in combinasaid support, two cutters, one for each of the straight edges of the plate, an arcuate cutter for the interior of the plate, and

means for effecting relative movement between the cutters and the plate.

ll. A machine for operating upon stereotype printing plates including in combination means for supporting a semi-cylindrical plate, means for casting a plate, means for automatically delivering the cast plate to said support, a cutter for the straight edge of the plate, an arcuate cutter for the interior of the plate, means for effecting relative movement between the cutters and the plate, and a saddle for carrying away the trimmed plate.

42. A machine for operating upon stereotype printing plates, includingin combination means for supporting a semi-cylindrical plate, means for casting a plate, means for automatically delivering the cast plate to said support, a cutter for the straight edge of the plate, an arcuate cutter for the interior of the plate, means for effecting relative movement between the cutters and the plate including a carriage on which the cutters are mounted,'means for effecting relative movement between the carriage and the plate, and a saddle mounted on the carriage for conveying away the trimmedplate] 43. A machine for operating upon stereotype'printing plates including in combination means for supporting a semi-cylindrical plate, meanstor casting a plate, means for automatically delivering the cast plate to said support, a cutter for the straight edge of the plate, an arcuate cutter for the interior of the plate, means for efiecting relative movement between the cutters and the plate including a carriage on which the cutters are mounted, means for effecting relative movement between the carriage and the plate, and a saddle mounted on the carriage for conveying away the trimmed plate and delivering it to a cooling station.

44. A machine for making stereotype printing plates including in combination casting members constituting a casting chamber, a hot metal pump and means preventing the operation of the piston of the pump when a casting member is not at casting position.

A5. A machine for making stereotype printing plates including in combination cast-ing members constituting a casting chamber, a manually operable hot metal pump and means preventing the pumping of the metal when a casting member is not at casting postition.

46. A machine for making stereotype printing plates including in combination casting members constituting a casting chamber, a hot metal pump, means for mounting the pump for rectilinear sliding movement to and from casting position and mechanical means preventing the pumping of the metal when a casting member is not at casting position.

47. A machine for making stereotype printing plates including in combination casting members constituting a casting chamber, a manually operable hot metal pump and mechanical means preventing the pumping of the metal when a casting member is not at casting position.

48. A machine for making stereotype printing plates including in combination casting members constituting a casting chamber, a hot metal pump and means preventing the operation of the piston of the pump :when a casting member is not at casting position, and permitting the operation of the piston of the pump when the casting member is at casting position.

49. A machine for making stereotype printing plates including in combination casting members constituting a casting chamber, a manually operable hot -metal pump and means preventing the pumping of the metal when a casting member is not at casting position, and permitting the operation of the pump when the casting member is at casting position.

50. A machine for making stereotype printing plates including in combination casting members constituting a casting chamber, a hot metal pump and means preventing the pumping of the metal when a casting member is not at casting position, and movable by the casting member to permit the operation of the pump when the casting member is at casting position.

51. A machine for making stereotype printing plates including in combination casting members constituting a casting chamber, a manually operable hot metal pump and means preventing the pumping of the metal When a casting member is not at casting position, and movable by the casting member to permit the operation of the pump when the casting member is at casting position.

52. A machine for making stereotype printing plates including in combination asting members, constituting the casting chamber, one of said members carrying the matrix,'means for driving the machine, and means preventing the machine being started unless a matrix is in proper position for casting.

53. A machine for making stereotype printing plates including in combination asting members, constituting the casting chamber, one of said members carrying the matrix, means for bringing a casting member to casting position and means for preventing the movement of said member unless a matrix is in proper position for easting.

A. machine for making stereotype printing plates including in combination casting members, constituting the casting chamber, oneof said members carrying the matrix, a hot metal pump, and means for preventing the pumping of the metal unless a matrix is in proper position for casting.

A machine for making stereotype printing plates including in combination casting members, constituting the casting chamber, one of said members carrying the matrix, a hot metal pump, and means for preventing the pumping of the metal unless a matrix is in proper position for casting, and the casting members are in casting position.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing Witnesses.

JOSEPH J. \VALSER.

Witnesses:

H. FANKBONER, M. L. REDFIELD. 

